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Finding the Fourth Proportional to 203,543.92, 305,100.26 and 68,479.37

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Solution

The fourth proportional to 203,543.92, 305,100.26 and 68,479.37 is: 102,646.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,543.92 : 305,100.26 = 68,479.37 : x
  2. Step 2: Convert to fraction form
    203,543.92/305,100.26 = 68,479.37/x
  3. Step 3: Cross multiply
    203,543.92x = 305,100.26 × 68,479.37
  4. Step 4: Simplify right side
    203,543.92x = 20,893,073,591.64
  5. Step 5: Solve for x
    x = 20,893,073,591.64/203,543.92
  6. Step 6: Final answer
    x = 102,646.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.